Grinding-machine.



M. HARRIS.

GRINDING MACHINE.

APPLICATION FILED MAY 6,'I9I5.

1,176,2*1 8. PaIenIed Mar. 21, 1916.

l/llllz 'n IE COLUMBIA PLANQGIIAI'II tu.. wIIsIIINu'mN, u. c.

MINOR HARRIS, or HARTINGTON, NEBRAsKfA.

enrivmiv'iviaonrnn.

Specification of Letters Patent.

Patented Mar. 2i, i916.

applic-atten sied Mays, i915. serial No. aaaas.

` taiiis I tol make and use the' same.

Myinvention 'relates to new and luseful improvements in grindingmachines and moreparti'cularly'to that class adapted to be used forgrinding foodV for live-stock, fo'wis, `et`c.,"and`my object is toprovide a grinding machine that may be very cheaply, as wellas strongand durably constructed.

A'fu'rther Objectis to so construct the d`e vicetthatzhorse power may beapplied thereto to operate the same.

A further object is to provide'means for regulating` the crushingrollers for fine or coarse grinding. And a further `object is toprovideV means for causing y theA crushing rollers to travel toward eachother when the driving mechanism is rotated either to the right or left..y

Other objects and advantages "will be hereinafter set forth and-dimoreparticularly pointed out in the accompanyingV specifica- 131011; M y.

In the accompanying drawings whicliare made a part of this application,Figure 1 is a vertical sectional view through the grinding machine. Fig.2 is a horizontal sectional view as seen on line 2 2 of Fig. 1, withpart of the device omitted. Fig. 3 is a sectional view through the upperportion of the device as seen on line 3-3 of Fig. 1. Fig. 4 is a topplan view of the power applying gear removed, and Fig. 5 is a plan viewof the frame portion of the device.

Referring to the drawings in which similar reference numerals designatecorresponding parts throughout the `several views, 1 indicates thesupporting frame of the grinder, which is preferably in the for'm of aring, to which are attached any suitable form of supporting legs 2,-theupper face of the supporting frame having ears 3 eX- tending upwardlytherefrom and arranged in pairs, between which are rotatably mountedfriction rollers 4 for the reception of the base 5 of the driving gear6.

The1 driving gear 6 is constructed :in "circular formation and thebasemember thereof eXtends-late'ially from the lower edgel ofthe drivinggear soas to forni a face to bear upon and travel'over the rollersl whenthe driving'gear-isiotated, and in order to retain the gear in positionover the rollers, straps 7, orV the like, are-attached to the outer edgeof the supporting frame 1 and have their upper ends bent inwardly andextended overthe upper face of the` base 5, thus retaining the drivinggeariii positionover ,the'rollers l Supported from the frame 1`byrnean's of brackets, orthe like 8, isa housing 9 which is preferablyconstructed oblong and has mounted therein a pair of crushingrollers 10and llwhich extend longitudinally of the housingV and findbearings in.the end walls thereof, said rollers `having shafts 12 and 13respectively extending from each end thereof lto receive pinions 14: and15 respectively, the teeth-of which mesh with the teeth 16 of thedriving gear 6 and which cause'said rollers'to revolve when the drivinggear is operated. y l

Each crushing roller isiprovided with` but one pinion and in order tocause therollersV to'rotate toward each otlierwhenthe driving gear 6 isgivena righthand drive, the pinion 14 is engaged with the shaft 12 atthe-left hand end of the roller, while -the pinion 15 is attached to theshaft 13 at the right hand end of the roller 11, but should thel drivinggear be given a left hand drive, the two gears should be shifted toopposite ends of their respective crushing rollers.

Extending upwardly from the housing 9 and supported by the end wallsthereof is a hopper 17, which is preferably iared and has its lower endterminated immediately above the crushing rollers 10 and 11, the openingat the lower end of the hopper being of less width than the combinedwidth of the two crushing rollers, thereby causing the grain, etc.,contained within the hopper to pass between the rollers.

Extending longitudinally through the hopper 17 is an agitator 18 havinglingers 19 thereon, and when rotated will agitate and feed the contentsof the hopper into engagement with the rollers. One end of the agitatorhas a shaft 20 projecting therefrom, the outer end of which carries agear 2l, which gear meshes with the gear 14e to cause the agitatorV torotate when the mill is operated.

In order to regulate the amount of grain, etc., admitted to the rollersfor crushing purposes, a slide 22 is introduced through one wall of thehopper, adjacent its lower end, and by moving the slide inwardly oroutwardly, the amount of grain, etc., being fed to the rollers may beregulated.

The roller 1l has its shaft 13 extended through elongated slots 23 intheend walls of theliousing and coperating with said shafts 13 are bearingblocks 24 which blocks coperate with adjusting screws 25 extendingthrough threaded openings in the wings 26 at each end of the housing 9,the outer ends of the adjusting screws preferably having hand wheels 27thereon for turning said screws to adjust the roller 1l toward or fromthe roller lO whereby the product will be ground to a finer or coarserdegree.

The gear 6 is rotated in any preferred manner, but preferably byattaching a sweep 28to the verticalface of the gear, to which a draftanimal is hitched, a lead pole 29 being also attached to the gear Gat adistance from the sweep to properly guide'the animal in its travelaround the mill.

In view of the simplicity of this device, it

can be very cheaply constructed and at theV same time rendered strongand durable, and by providing the adjusting screws for one of therollers, the food may be ground to a finer or coarser degree as theoccasion may require.

It will likewise be seen that by mounting the driving gear upon thefriction rollers 4, as shown, the mill may be easily operated in viewAof the lightV running qualities of the parts.

Having thus fully described my invention what I claim as new and desireto'secui'e by ALeiters Patent of the United States is adjusting screws,and an angular shaped aring hopper engaged within the end walls' of thehousing adapted to convey food particles into said housing to be crushedby said" rollers.

2. A grinding mill comprising a pair of crushing rollers having shaftsextending beyond each end thereof, a single driving pinion for eachroller adapted for'attachnient to either end of the shafts, and acircular driving gear engaging both of said pinions for rotating'saidcrushing rollers, one pinion beingat the end of one shaft and the otherpinion at theV opposite'end ofthe other shaft when the gear is rotatedin one direction and on the opposed ends of saidV shafts when the gearis rotated in the oppo-V site direction wherebysaid rollers will becaused to rotate toward each other at al1 times.

In testimony whereof I have Vsigned *myy name to this specification inthe two subscribing witnesses.

MINOR HARRIS.

presence of Witnesses:

V. C. HERTERT, Y SAMUEL A. SCHAGER.

Copies of this patent may he obtainedfor ve cents each, 'by addressing"thevv Commissioner of Patents,

" Washington, D. C. l

